You can set up a number of data sources. However, only one can be actively used by the server.
To activate this data source, proceed as follows:
While the data source is being activated, the application checks whether a valid database schema can be found. If no schema is found, a new schema will be created. An out-of-date schema will be updated, and, if the schema contains unfamiliar data, these will be overwritten.
Warning: Overwriting existing data means that the entire database schema will be deleted and not just the out-of-date tables used by the IGEL UMS.